Fisher Caldera

From Wikipedia, the free encyclopedia
Jump to: navigation, search
Fisher Caldera
Elevation 3,648 ft (1,112 m)[1]
Location Unimak Island, Alaska,
United States
Range Aleutian Range
Coordinates 54°40′N 164°23′W / 54.667°N 164.383°W / 54.667; -164.383Coordinates: 54°40′N 164°23′W / 54.667°N 164.383°W / 54.667; -164.383
Type Stratovolcano remnant
Volcanic arc/belt Aleutian Arc
Last eruption August 1830

Fisher Caldera, also known as Mount Fisher and Fisher Volcano, is a large volcanic caldera, measuring about 6.8 miles (11 km) by 11 miles (18 km), located on Unimak Island in the Aleutian Islands of Alaska.[1] Formed by the destructive eruption of an andesitic stratovolcano about 9,100 years ago,[1] it contains three crater lakes, one 2 miles (3.2 km) wide and two others about 1.5 miles (2.4 km) wide. Small peaks rising 2,000 feet (600 m) and 2,031 feet (619 m) are also present in the caldera. Fisher Caldera is located just 13 miles (21 km) from the Mount Westdahl volcano.


  1. ^ a b c "Fisher Caldera Description and Information". Alaska Volcano Observatory. 4 June 2012. Retrieved 15 August 2012. 

See also[edit]